TWI778588B - Inspection connector and inspection unit - Google Patents

Abstract

The present invention is to provide an inspection connector and an inspection unit that can accurately measure high-frequency signals even when a plurality of terminals to be measured include a signal terminal and a ground terminal. The connector for inspection includes: a first socket; a first sleeve that surrounds the first socket; a second socket; a second socket that surrounds the second socket and is disposed on the right side of the first socket; A cable adapter, which supports the first sleeve and the second sleeve in the state of being electrically connected to the first sleeve and the second sleeve; the first signal pin and the second signal pin are electrically connected to the first sleeve The socket and the second socket extend downward from the first socket and the second socket; the first ground pin, which is electrically connected to the cable adapter, is on the right side of the first signal pin and the left side of the second signal pin Extend up and down.

Description

Inspection connector and inspection unit

The present invention relates to an inspection connector and an inspection unit for measuring high-frequency signals.

As an invention related to a conventional inspection connector, for example, the probe described in Patent Document 1 is known. The probe described in Patent Document 1 can simultaneously measure the signals of a plurality of terminals of the measurement object. Specifically, the probe described in Patent Document 1 includes a plurality of center conductors. The plurality of center conductors are respectively in contact with the terminals of the measurement object. A plurality of terminals to be measured are signal terminals. [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 6380549

[Problems to be Solved by Invention]

However, in the probe described in Patent Document 1, a plurality of terminals to be measured are signal terminals. On the other hand, there are cases in which the plurality of terminals to be measured include a signal terminal and a ground terminal. In such a case, it is also required that the probe can accurately measure the signal.

Therefore, an object of the present invention is to provide an inspection connector and an inspection unit that can accurately measure high-frequency signals even when a plurality of terminals to be measured include a signal terminal and a ground terminal. [Technical means to solve problems]

An inspection connector according to one aspect of the present invention is connected to an end of a first coaxial cable and an end of a second coaxial cable, wherein the first coaxial cable includes a first center conductor and surrounds the first center conductor. the first outer conductor, and a first insulator insulating the first center conductor from the first outer conductor; the second coaxial cable includes a second center conductor, a second outer conductor surrounding the second center conductor, and a second insulator insulating the second central conductor and the second outer conductor; and the inspection connector is provided with: a first socket, which is electrically connected to the first center conductor; a first sleeve, which is electrically connected to the first outer conductor and surrounds the circumference of the first socket when viewed downward; a second socket, which is electrically connected to the above-mentioned second center conductor; a second sleeve, which is electrically connected to the second outer conductor, surrounds the periphery of the second socket when viewed downward, and is disposed on the right side of the first sleeve; a cable adapter, which supports the first sleeve and the second sleeve in a state of being electrically connected to the first sleeve and the second sleeve; a first signal pin, which is electrically connected to the first socket and extends downward from the first socket; a second signal pin electrically connected to the second socket and extending downward from the second socket; and The first ground pin is electrically connected to the cable adapter, and extends in the up-down direction on the right side of the first signal pin and the left side of the second signal pin.

Hereinafter, definitions of terms used in this specification will be described. In this specification, the shaft or member extending in the front-rear direction does not necessarily mean only the shaft or member parallel to the front-rear direction. A shaft or member extending in the front-rear direction means a shaft or member inclined within a range of ±45° with respect to the front-rear direction. Likewise, the shaft or member extending in the up-down direction means the shaft or member inclined within a range of ±45° with respect to the up-down direction. The shaft or member extending in the left-right direction means a shaft or member inclined within a range of ±45° with respect to the left-right direction.

Hereinafter, the positional relationship of the members in this specification is defined. The first member to the third member constitute a unit for inspection. In this specification, the 1st member and the 2nd member arranged in the front-back direction show the following states. When the first member and the second member are viewed in the direction perpendicular to the front-rear direction, it is a state in which both the first member and the second member are arranged on an arbitrary straight line showing the front-rear direction. In this specification, the first member and the second member arranged in the front-rear direction when viewed in the vertical direction represent the following states. When the first member and the second member are viewed in the up-down direction, both the first member and the second member are arranged on an arbitrary straight line showing the front-rear direction. At this time, when the first member and the second member are viewed from the left-right direction different from the vertical direction, either the first member or the second member may not be arranged on any straight line showing the front-rear direction. In addition, the first member and the second member may be brought into contact with each other. The first member and the second member may be separated. A third member may be present between the first member and the second member. This definition also applies to directions other than the front-to-rear direction.

In this specification, a 1st member is arrange|positioned before a 2nd member, and means the following state. At least a part of the 1st member is arrange|positioned in the area|region which the 2nd member passes when moving in parallel in the forward direction. Thereby, the 1st member can be accommodated in the area|region which the 2nd member passes through when the parallel movement of the front direction is carried out, and can also protrude from the area|region which the 2nd member passes through when it moves parallelly in the front direction. At this time, the first member and the second member are arranged in the front-rear direction. This definition also applies to directions other than the front-to-rear direction.

In this specification, when a 1st member is arrange|positioned in front of a 2nd member, when it sees in the left-right direction, it means the following state. When viewed in the left-right direction, the first member and the second member are arranged in the front-rear direction, and when viewed in the left-right direction, the portion of the first member facing the second member is disposed in front of the second member. In this definition, the first member and the second member may not be arranged in the front-rear direction in three dimensions. This definition also applies to directions other than the front-to-rear direction.

In this specification, the arrangement|positioning of a 1st member ahead of a 2nd member means the following state.

The 1st member is arrange|positioned before the plane which passes the front-end|tip of the 2nd member and is orthogonal to the front-back direction. At this time, the first member and the second member may be arranged in the front-rear direction, or may not be arranged in the front-rear direction. This definition also applies to directions other than the front-to-rear direction.

In this specification, unless otherwise specified, each part of the first member is defined as follows. The front part of the first member means the front half of the first member. The rear part of the first member means the rear half of the first member. The left part of the first member means the left half of the first member. The right portion of the first member means the right half of the first member. The upper part of the first member means the upper half of the first member. The lower part of the first member means the lower half of the first member. The front end of the first member means the end in the front direction of the first member. The rear end of the first member means the end in the rear direction of the first member. The left end of the first member means the left end of the first member. The right end of the first member means the end in the right direction of the first member. The upper end of the first member means the end in the upper direction of the first member. The lower end of the first member means the end in the downward direction of the first member. The front end portion of the first member means the front end of the first member and its vicinity. The rear end portion of the first member means the rear end of the first member and its vicinity. The left end of the first member means the left end of the first member and its vicinity. The right end of the first member means the right end of the first member and its vicinity. The upper end portion of the first member means the upper end of the first member and its vicinity. The lower end of the first member means the lower end of the first member and its vicinity.

When defining arbitrary two members as a 1st member and a 2nd member in this specification, the relationship of the arbitrary two members is as the following semantics. In this specification, the fact that the first member is supported by the second member means that the first member is immovably mounted on the second member (that is, fixed) relative to the second member, and the first member is movable relative to the second member. When it is movably attached to the second member. In addition, the fact that the first member is supported by the second member means including both the case where the first member is directly attached to the second member and the case where the first member is attached to the second member via the third member.

In this specification, the first member is held by the second member means including the case where the first member is immovably mounted on the second member (ie, fixed) relative to the second member, and does not include the first member relative to the second member When it is movably attached to the second member. In addition, a 1st member is hold|maintained by a 2nd member means the case where a 1st member is directly attached to a 2nd member, and the case where a 1st member is attached to a 2nd member via a 3rd member is included.

In this specification, "the 1st member and the 2nd member are electrically connected" means the electrical conduction between the 1st member and the 2nd member. Therefore, the first member and the second member may be in contact with each other, and the first member and the second member may not be in contact with each other. When the first member and the second member are not in contact with each other, a third member having conductivity is arranged between the first member and the second member. [Effect of invention]

According to the inspection connector of the present invention, even when the plurality of terminals to be measured include the signal terminal and the ground terminal, it is possible to accurately measure high-frequency signals.

(Embodiment) [Construction of inspection unit] Hereinafter, the structure of the inspection unit 10 according to the embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of the inspection unit 10 . In FIG. 1, the structure of the inspection unit 10 in the cross section orthogonal to the front-back direction is shown. FIG. 2 is a cross-sectional view of the inspection connector 100 . FIG. 3 is an exploded perspective view of the connector 100 for inspection. FIG. 4 is an enlarged cross-sectional view of the connector 100 for inspection. FIG. 5(A) is an external perspective view of the bushings 124 and 126 and the grounding pin supporting member 132 . FIG. 5(B) is a view when the ground pin supporting member 132 is viewed upward. FIG. 6 is a bottom view of the cable adapter 105 .

As shown in FIGS. 1 to 4 , the up-down direction, the left-right direction, and the front-rear direction are defined. Among them, the up-down direction, the left-right direction, and the front-rear direction are directions defined for illustration. Therefore, the up-down direction, the left-right direction, and the front-rear direction of the inspection unit 10 may not be consistent with the up-down direction, the left-right direction, and the front-rear direction in FIGS. 1 to 4 . In addition, the up-down direction may be opposite to the up-down direction in FIGS. 1 to 4 . The left-right direction may also be opposite to the left-right direction in FIG. 1 to FIG. 4 . The front-rear direction may also be opposite to the front-rear direction in FIGS. 1 to 4 .

The inspection unit 10 is used to measure the high frequency signal transmitted in the electronic device. As shown in FIG. 1 , the inspection unit 10 includes an inspection connector 100, external connection connectors 200a to 200h, and coaxial cables 202a to 202h. The external connection connectors 200a to 200h are connected to a measurement device not shown. The structures of the external connection connectors 200a to 200h are general structures, and thus the description is omitted.

The coaxial cable 202a (first coaxial cable) electrically connects the inspection connector 100 and the external connection connector 200a. The coaxial cable 202b (second coaxial cable) electrically connects the inspection connector 100 and the external connection connector 200b. The coaxial cable 202c (third coaxial cable) electrically connects the inspection connector 100 and the external connection connector 200c. The coaxial cables 202d to 202h electrically connect the inspection connector 100 and the external connection connectors 200d to 200h, respectively. The coaxial cables 202a to 202d are sequentially arranged in a row from left to right. The coaxial cables 202e to 202h are sequentially arranged in a row from left to right. The coaxial cables 202e to 202h are arranged in front of the coaxial cables 202a to 202d. The coaxial cables 202a to 202h have the same configuration. The structure of the coaxial cable 202a will be described as an example.

As shown in FIG. 4 , the coaxial cable 202a includes a center conductor 204a (first center conductor), an outer conductor 206a (first outer conductor), an insulator 208a (first insulator), and a coating 210a. The center conductor 204a is the core wire of the coaxial cable 202a. Therefore, the center conductor 204a is located in the center of the coaxial cable 202a. The center conductor 204a is made of a low-resistance conductor. The center conductor 204a is made of copper, for example.

The outer conductor 206a surrounds the center conductor 204a. Therefore, the outer conductor 206a has an annular shape in a cross section orthogonal to the direction in which the coaxial cable 202a extends. Such an outer conductor 206a is produced by, for example, arranging thinner wires. The outer conductor 206a is made of a low-resistance conductor. The outer conductor 206a is made of copper, for example.

The insulator 208a insulates the center conductor 204a from the outer conductor 206a. Insulator 208a is located between center conductor 204a and outer conductor 206a. Insulator 208a surrounds center conductor 204a. The periphery of the insulator 208a is surrounded by the outer conductor 206a. The insulator 208a has an annular shape in a cross section orthogonal to the extending direction of the coaxial cable 202a. The insulator 208a is made of insulating resin. The insulator 208a is made of polyethylene, for example. In addition, a plurality of holes are provided in the insulator 208a so that the coaxial cable 202a can be flexibly changed.

The outer conductor 206a is surrounded by the film 210a. Therefore, the film 210a has an annular shape in a cross section perpendicular to the direction in which the coaxial cable 202a extends. The film 210a is made of insulating resin. The coating 210a is made of polyethylene, for example. However, the film 210a is not provided with a plurality of holes, or is provided with fewer holes than the insulator 208a. Therefore, the film 210a is less deformable than the insulator 208a. Therefore, the Young's modulus of the film 210a is larger than the Young's modulus of the insulator 208a.

At the lower end of the coaxial cable 202a, by removing the outer conductor 206a, the insulator 208a, and the film 210a, the central conductor 204a is exposed from the coaxial cable 202a. Furthermore, by removing the coating 210a above the portion where the center conductor 204a is exposed, the outer conductor 206a is exposed from the coaxial cable 202a. Although detailed description is omitted, the coaxial cable 202b includes a center conductor 204b (second center conductor), an outer conductor 206b (second outer conductor), an insulator 208b (second insulator), and a coating 210b. The coaxial cable 202c includes a center conductor 204c (third center conductor), an outer conductor 206c (third outer conductor), an insulator 208c (third insulator), and a coating 210c.

The inspection connector 100 is connected to the ends of the coaxial cables 202a to 202h. In the present embodiment, the inspection connector 100 is connected to the lower ends of the coaxial cables 202a to 202h. As shown in FIGS. 2 and 3 , the inspection connector 100 includes a plunger 102 , a ring 103 , a housing 104 , a cable adapter 105 , a flange 106 , a spring 108 , a spacer 109 , signal pins 120 a to 120 h , a sleeve Cylinders 122a to 122h (refer to FIG. 4 ), sockets 123a to 123h (refer to FIG. 4 ), bushings 124 , 126 , 130a to 130h (refer to FIG. 4 ), ground pin support member 132 , and ground pins 220a to 220h (refer to FIG. 4 ) ). However, the signal pins 120e to 120h, the sleeves 122e to 122h, the sockets 123e to 123h, the bushes 130e to 130h and the ground pins 220e to 220h are not shown.

The sockets 123a to 123h (the socket 123a is a first socket, the socket 123b is a second socket, and the socket 123c is a third socket) are electrically connected to the central conductors 204a to 204h, respectively. However, the sockets 123a-123h are not electrically connected to the outer conductors 206a-206h, respectively.

The sockets 123a to 123d are arranged in a row from left to right. Thereby, the socket 123d is arranged on the right side of the socket 123c. The socket 123c is disposed on the right side of the socket 123b. The socket 123b is disposed on the right side of the socket 123a. The sockets 123e to 123h are arranged in a row from left to right. The sockets 123e to 123h are arranged in front of the sockets 123a to 123d. Since the sockets 123a to 123h have the same structure, the socket 123a will be described below. Description of the sockets 123b to 123h is omitted.

As shown in FIG. 4, the socket 123a is attached to the lower end of the coaxial cable 202a. Thereby, the socket 123a is electrically connected to the center conductor 204a. However, the socket 123a is not electrically connected to the outer conductor 206a. More specifically, the socket 123a has a cylindrical shape having a central axis extending in the up-down direction. The upper end of the socket 123a is open. The lower end of the socket 123a is not opened. However, the lower end of the socket 123a can also be opened. The center conductor 204a is exposed at the lower end of the coaxial cable 202a. The center conductor 204a is inserted into the socket 123a from the opening at the upper end of the socket 123a. The center conductor 204a is fixed to the socket 123a by solder. Thereby, the center conductor 204a is electrically connected to the socket 123a. Here, the socket 123a is not in contact with the outer conductor 206a. Therefore, the socket 123a is not electrically connected to the outer conductor 206a. The socket 123a having the above structure is made of brass, for example.

The sleeves 122a to 122h (the sleeve 122a is a first sleeve, the sleeve 122b is a second sleeve, and the sleeve 122c is a third sleeve) are electrically connected to the outer conductors 206a to 206h, respectively. The sleeves 122a-122h are not electrically connected to the central conductors 204a-204h, respectively. The sleeves 122a to 122h surround the sockets 123a to 123h, respectively, when viewed in the downward direction.

The sleeves 122a-122d are sequentially arranged in a row from left to right. Thereby, the sleeve 122d is arranged on the right side of the sleeve 122c. The sleeve 122c is disposed on the right side of the sleeve 122b. The sleeve 122b is disposed on the right side of the sleeve 122a. The sleeves 122e-122h are sequentially arranged in a row from left to right. The sleeves 122e to 122h are arranged in front of the sleeves 122a to 122d. Since the sleeves 122a to 122h have the same structure, the sleeve 122a will be described below. Description of the sleeves 122b to 122h is omitted.

As shown in FIG. 4, the socket 122a is attached to the lower end of the coaxial cable 202a. Thereby, the sleeve 122a is electrically connected to the outer conductor 206a. The sleeve 122a is not electrically connected to the center conductor 204a. More specifically, the sleeve 122a has a cylindrical shape having a central axis extending in the up-down direction. The central axis of the sleeve 122a coincides with the central axis of the socket 123a. Moreover, the socket 123a is accommodated in the inside of the sleeve 122a. Thereby, the sleeve 122a surrounds the circumference of the socket 123a when viewed in the downward direction. The upper end of the socket 123a is open. The lower end of the socket 123a is open. At the lower end of the coaxial cable 202a, the outer conductor 206a is exposed. The outer conductor 206a is inserted into the inside of the sleeve 122a from the opening at the upper end of the sleeve 122a. The outer conductor 206a is fixed to the sleeve 122a by solder. Thereby, the outer conductor 206a is electrically connected to the sleeve 122a. The sleeve 122a having the above structure is made of brass, for example.

The bushings 130a-130h insulate the sleeves 122a-122h from the sockets 123a-123h, respectively. The bushings 130a to 130d are sequentially arranged in a row from left to right. Thereby, the bush 130d is arranged on the right side of the bush 130c. The bushing 130c is disposed on the right side of the bushing 130b. The bushing 130b is arranged on the right side of the bushing 130a. The bushings 130e to 130h are sequentially arranged in a row from left to right. The bushes 130e to 130h are arranged in front of the bushes 130a to 130d. Since the bushings 130a to 130h have the same structure, the bushing 130a will be described below. Description of the bushings 130b to 130h is omitted.

As shown in FIG. 4 , the bushing 130a is mounted on the lower end of the sleeve 122a and the lower end of the socket 123a. In more detail, the bush 130a has a cylindrical shape having a center axis extending in the up-down direction. The central axis of the bushing 130a is consistent with the central axis of the sleeve 122a and the central axis of the socket 123a. The lower end of the socket 123a is inserted into the bush 130a. The bushing 130a is disposed at the inner lower end of the sleeve 122a. The bushing 130a is made of insulating resin. The bushing 130a is made of epoxy resin, for example. Thereby, the sleeve 122a is insulated from the socket 123a.

As shown in FIG. 4, the cable adapter 105 supports the sleeves 122a-122h in a state of being electrically connected with the sleeves 122a-122h. More specifically, as shown in FIG. 5 , the cable adapter 105 has a combination of a cylindrical shape and a rectangular parallelepiped shape. The upper portion of the cable adapter 105 has a cylindrical shape having a central axis extending in the up-down direction. The lower part of the cable adapter 105 has a rectangular parallelepiped shape. Eight through holes are provided in the cable adapter 105 . The eight through holes pass through the cable adapter 105 in the vertical direction. The sleeves 122a to 122h are inserted into the eight through holes. Thereby, the cable adapter 105 holds the sleeves 122a to 122h. Further, the outer peripheral surfaces of the sleeves 122a to 122h are in contact with the inner peripheral surfaces of the eight through holes, respectively. Thereby, the cable adapter 105 is electrically connected to the sleeves 122a-122h. The cable adapter 105 is connected to ground potential. The cable adapter 105 is made of metal with high conductivity. The cable adapter 105 is made of, for example, SUS (Stainless Steel).

The signal pins 120a-120h (the signal pin 120a is the first signal pin, the signal pin 120b is the second signal pin, and the signal pin 120c is the third signal pin), respectively, as shown in FIG. 4, are electrically connected to the sockets 123a-123h. The signal pins 120e to 120h are not shown in FIG. 4 . The signal pins 120a to 120h extend downward from the sockets 123a to 123h, respectively.

As shown in FIG. 2, the signal pins 120a-120d are arranged in a row from left to right. Thereby, the signal pin 120d is disposed on the right side of the signal pin 120c. The signal pin 120c is disposed on the right side of the signal pin 120b. The signal pin 120b is disposed on the right side of the signal pin 120a. The signal pins 120e to 120h are sequentially arranged in a row from left to right. The signal pins 120e to 120h are arranged in front of the signal pins 120a to 120d. Since the signal pins 120a to 120h have the same structure, the signal pin 120a will be described below. Description of the signal pins 120b to 120h is omitted.

The signal pin 120a is a terminal to which a high frequency signal having a relatively high frequency is applied. The high frequency signal having a relatively high frequency is, for example, a millimeter wave signal or a microwave signal having a frequency of 0.3 GHz to 0.3 THz. As shown in FIG. 4, the signal pin 120a is a rod-shaped member extending in the up-down direction. The upper end of the signal pin 120a is in contact with the lower end of the socket 123a. Thereby, the signal pin 120a is electrically connected to the socket 123a.

As shown in FIG. 2 , the signal pin 120a includes a cylindrical portion 1202a, a lower pin 1204a, an upper pin 1206a, and a spring 1208a. The cylindrical portion 1202a has a cylindrical shape having a central axis extending in the up-down direction. The shape of the cylindrical portion 1202a may also be a polygonal column shape such as a hexagonal column. The diameters of the upper and lower ends of the cylindrical portion 1202a may also be smaller than the diameters of the remaining portions of the cylindrical portion 1202a. That is, the cylindrical portion 1202a has a shape in which the upper end portion and the lower end portion of the cylindrical portion 1202a are slightly narrowed.

The lower needle 1204a is a rod-shaped member extending in the up-down direction. The upper portion of the lower needle 1204a is located inside the barrel portion 1202a. The lower portion of the lower needle 1204a is located outside the barrel portion 1202a. The diameter of the upper portion of the lower needle 1204a is larger than the diameter of the remaining portion of the lower needle 1204a. Thereby, the lower needle 1204a cannot pass through the cylindrical portion 1202a in the downward direction.

The upper needle 1206a is a rod-shaped member extending in the up-down direction. The lower part of the upper needle 1206a is located inside the cylindrical part 1202a. The upper portion of the upper needle 1206a is located outside the cylindrical portion 1202a. The diameter of the lower part of the upper needle 1206a is larger than the diameter of the remaining part of the upper needle 1206a. Thereby, the upper needle 1206a cannot pass through the cylindrical portion 1202a in the upward direction. In addition, the upper end of the upper needle 1206a is in contact with the lower end of the socket 123a.

The spring 1208a is arranged inside the cylindrical portion 1202a. The lower end of the spring 1208a is in contact with the upper end of the lower needle 1204a. The upper end of the spring 1208a is in contact with the lower end of the upper needle 1206a. Thereby, the spring 1208a pushes the lower needle 1204a downward, and pushes the upper needle 1206a upward. The signal pin 120a having the above structure can be extended and retracted in the up-down direction.

The signal pins 120a as above are made of brass, for example. The signal pin 120a is supported by the plunger 102 in a state of being insulated from the plunger 102, as will be described later.

The ground pins 220a to 220h (the ground pin 220a is the first ground pin, and the ground pin 220b is the second ground pin) are electrically connected to the cable adapter 105 as shown in FIG. 4 and FIG. 6 , respectively. Among them, the ground pins 220e to 220h are not shown. The ground pins 220a to 220h extend downward from the cable adapter 105, respectively. More specifically, the ground pins 220a to 220h are terminals connected to the ground potential. The ground pins 220a to 220h are rod-shaped members extending in the up-down direction. The upper ends of the ground pins 220a to 220h are in contact with the cable adapter 105 . In this embodiment, the upper ends of the ground pins 220a to 220h are in contact with the lower surface of the cable adapter 105 . Thereby, the ground pin 220a is electrically connected to the cable adapter 105 .

As shown in FIG. 2, the ground pins 220a-220d are arranged in a row from left to right. More precisely, the signal pins 120a-120d and the ground pins 220a-220d are alternately arranged in a row from left to right. Thereby, the ground pin 220a extends in the up-down direction on the right side of the signal pin 120a and the left side of the signal pin 120b. The ground pin 220b is located on the right side of the signal pin 120b and on the left side of the signal pin 120c, and extends in the up-down direction. The ground pin 220c is located on the right side of the signal pin 120c and on the left side of the signal pin 120d, and extends in the up-down direction. The ground pin 220d is on the right side of the signal pin 120d and extends in the up-down direction. The ground pins 220e-220h are arranged in a row from left to right. More precisely, the signal pins 120e-120h and the ground pins 220e-220h are alternately arranged in a row from left to right. The ground pins 220e to 220h are arranged in front of the ground pins 220a to 220d. In addition, since the structure of the ground pins 220a-220d can use the structure of the signal pin 120a, description is abbreviate|omitted.

The above ground pins 220a-220h are made of brass, for example. The ground pins 220 a to 220 h are supported by the plunger 102 in a state of being electrically connected to the plunger 102 , as will be described later.

As shown in FIG. 2 , the plunger 102 is a cylindrical member extending in the up-down direction. In this embodiment, the plunger 102 has a cylindrical shape having a central axis extending in the up-down direction. The plunger 102 is provided with a through hole H1 extending in the up-down direction. The through hole H1 penetrates from the upper end to the lower end of the plunger 102 . The plunger 102 surrounds the signal pins 120a to 120h and the ground pins 220a to 220h when viewed in the downward direction. Therefore, the signal pins 120a to 120h and the ground pins 220a to 220h extend in the vertical direction in the through hole H1. The lower end of the plunger 102 is located below the lower ends of the signal pins 120a-120h and the lower ends of the ground pins 220a-220h. Thereby, the plunger 102 surrounds the periphery of the lower ends of the signal pins 120a-120h and the lower ends of the ground pins 220a-220h when viewed in the downward direction. The plunger 102 is not electrically connected to the signal pins 120a-120h. The plunger 102 is electrically connected to the ground pins 220a-220h. The plunger 102 is connected to ground potential.

Moreover, as shown in FIG. 4, in the cross section orthogonal to the front-back direction, on the left side of the signal needle 120a, the plunger 102 exists, and the needle does not exist. That is, between the signal pin 120a and the plunger 102, the signal pin and the ground pin do not exist.

In addition, the plunger 102 is electrically connected to the cable adapter 105 . Specifically, the cable adapter 105 is inserted into the upper portion of the through hole H1 of the plunger 102 . The inner peripheral surface of the through hole H1 is in contact with the outer peripheral surface of the cable adapter 105 . Thereby, the plunger 102 is electrically connected to the cable adapter 105 . The plunger 102 is made of metal with high conductivity. The plunger 102 is made of, for example, SUS.

The bushes 124 and 126 (insulating support members) support the signal pins 120a to 120h and the ground pins 220a to 220h as shown in FIG. 4 . More specifically, as shown in FIG. 5 , the bushes 124 and 126 each have a rectangular parallelepiped shape. The bushing 124 is disposed under the bushing 126 . By combining the bushing 124 and the bushing 126, a rectangular parallelepiped-shaped insulating support member is formed.

Sixteen through holes are provided in the bushings 124 and 126 . The 16 through holes penetrate the bushes 124 and 126 in the up-down direction. The signal pins 120a to 120h and the ground pins 220a to 220h are inserted into the 16 through holes. Thereby, the bushings 124 and 126 support the signal pins 120a to 120h and the ground pins 220a to 220h.

The bushings 124 , 126 are supported by the plunger 102 as shown in FIG. 2 . More specifically, the bushes 124 and 126 are inserted into the lower part of the through hole H1 of the plunger 102 . Thereby, the bushings 124 and 126 are arranged under the cable adapter 105 . The bushings 124 and 126 are made of insulating resin. The bushings 124 and 126 are made of epoxy resin, for example. Therefore, the plunger 102 is not electrically connected to the signal pins 120a-120h.

As shown in FIG. 5 , the ground pin supporting member 132 supports the ground pins 220 a to 220 h in a state of being electrically connected to the ground pins 220 a to 220 h. The ground pin support member 132 is a conductive member. More specifically, the ground pin supporting member 132 is a plate-shaped member having a rectangular shape when viewed in the upward direction. The ground pin support member 132 is disposed below the center in the vertical direction of the ground pins 220a to 220h. In this embodiment, the grounding pin supporting member 132 is fixed on the lower surface of the bushing 124 . Here, each of the lower ends of the ground pins 220a to 220h is thinner than the portion above the lower ends of the ground pins 220a to 220h. The ground pin supporting member 132 supports the lower ends of the ground pins 220a to 220h. Moreover, the ground pin support member 132 is in contact with the plunger 102 as shown in FIG. 2 . Thereby, the ground pin supporting member 132 is electrically connected to the plunger 102 . The ground pin support member 132 is connected to the ground potential.

Sixteen through holes are provided in the ground pin support member 132 . The 16 through holes penetrate the ground pin supporting member 132 in the up-down direction. The signal pins 120a to 120h and the ground pins 220a to 220h pass through 16 through holes. The diameters of the eight through holes through which the signal pins 120a to 120h pass are larger than the diameters of the signal pins 120a to 120h. Thereby, the ground pin support member 132 is not in contact with the signal pins 120a to 120h. A bushing 124 exists between the ground pin support member 132 and the signal pins 120a-120h. Therefore, the signal pins 120 a to 120 h are fixed to the ground pin support member 132 via the bushing 124 . The ground pin supporting member 132 is not electrically connected to the signal pins 120a-120h. The diameters of the eight through holes through which the ground pins 220a to 220h pass are substantially the same as the diameters of the ground pins 220a to 220h. Thereby, the ground pin support member 132 is brought into contact with the ground pins 220a to 220h. The ground pin supporting member 132 is electrically connected to the ground pins 220a-220h.

As shown in FIG. 2 , the ring 103 is a cylindrical member extending in the up-down direction. In this embodiment, the ring 103 has a cylindrical shape having a central axis extending in the up-down direction. The ring 103 is provided with a through hole H4 extending in the up-down direction. The through hole H4 penetrates from the upper end to the lower end of the ring 103 . The ring 103 is disposed on the plunger 102 so as to be in contact with the upper end of the plunger 102 . The ring 103 surrounds the coaxial cables 202a to 202h when viewed in the downward direction. Therefore, the coaxial cables 202a to 202h extend in the vertical direction in the through-hole H4. However, the ring 103 is not electrically connected to the center conductors 204a-204h. The ring 103 is electrically connected to the outer conductors 206a-206h. Ring 103 is connected to ground potential. The ring 103 is preferably made of a metal with high conductivity. The ring 103 is made of, for example, SUS. However, the ring 103 may also be made of insulating resin.

The casing 104 is a cylindrical member extending in the up-down direction. The casing 104 is provided with a through hole H2 extending in the up-down direction. The through hole H2 penetrates from the upper end to the lower end of the casing 104 . The lower end of the housing 104 is inserted into the upper portion of the plunger 102 and the ring 103 . Thereby, the housing 104 is supported by the plunger 102 in such a manner as to lie above the plunger 102 . The coaxial cables 202a to 202h pass through the interior of the casing 104 in the up-down direction. When viewed in the downward direction, the through-hole H1 , the through-hole H2 , and the through-hole H4 overlap. The casing 104 is made of metal with high conductivity. The case 104 is made of, for example, SUS.

The spacer 109 is arranged between the cable adapter 105 and the housing 104 in the up-down direction. The spacer 109 has a circular plate shape. When viewed in the downward direction, the spacer 109 is provided with two slits extending in the left-right direction. The coaxial cables 202a to 202h pass through these two slots in the vertical direction. Thereby, the spacer 109 performs positioning of the coaxial cables 202a to 202h in the front-rear direction and the left-right direction. Such a spacer 109 is made of a metal with high conductivity. The spacer 109 is produced by, for example, SUS.

The flange 106 is a member having a plate shape. The flange 106 has a rectangular shape when viewed in the downward direction. The flange 106 is arranged in the vicinity of the upper end portion of the casing 104 in the up-down direction. The flange 106 is provided with a through hole H3 extending in the up-down direction. The casing 104 passes through the through hole H3 in the up-down direction. The diameter of the upper end of the casing 104 is larger than the diameter of the through hole H3 of the flange 106 . Therefore, the case 104 cannot pass through the through hole H3 in the downward direction. Such a flange 106 is made of a metal with high conductivity. The flange 106 is produced by, for example, SUS.

The spring 108 urges the flange 106 in the upward direction. The spring 108 urges the ring 103 in the downward direction. In more detail, the upper end of the spring 108 is fixed to the lower surface of the flange 106 . The lower end of the spring 108 is fixed to the upper end of the ring 103 . The plunger 102, the ring 103, and the housing 104 are integrated. Therefore, when the plunger 102 is pushed upward, the spring 108 contracts, and the plunger 102 , the ring 103 , and the case 104 are displaced upward with respect to the flange 106 .

Next, a method of using the inspection unit 10 will be described. The inspection unit 10 is connected to a connector having 8 signal terminals and 8 ground terminals. High-frequency signals with relatively high frequencies are output from the eight signal terminals. The eight ground terminals are connected to ground potential.

The inspection connector 100 is provided on the connector. Then, the inspection connector 100 is lowered. Thereby, the signal pins 120a to 120h are in contact with the eight signal terminals of the connector. That is, a high frequency signal having a relatively high frequency is applied to the signal pins 120a to 120h. At this time, the signal pins 120a to 120h are pushed upward by the eight signal terminals. Therefore, the signal pins 120a to 120h are displaced upward with respect to the plunger 102 . The ground pins 220a to 220h are in contact with eight ground terminals. That is, the ground pins 220a to 220h are connected to the ground potential. At this time, the ground pins 220a to 220h are pressed upward by the ground terminals. Therefore, the ground pins 220a to 220h are displaced upward with respect to the plunger 102 . Through the above operations, the measuring device connected to the inspection connector 100 can ensure the connectivity to the connector and measure a high-frequency signal having a relatively high frequency.

[Effect] According to the connector 100 for inspection, when a signal terminal and a ground terminal are included in a plurality of terminals to be measured, a high-frequency signal can be accurately measured. More specifically, in the inspection connector 100, the sleeve 122b surrounds the socket 123b when viewed in the downward direction. Furthermore, the sleeve 122b is arranged on the right side of the sleeve 122a. Therefore, the set of the sleeve 122b having the coaxial structure and the socket 123b is arranged on the right side of the set of the sleeve 122a and the socket 123a having the coaxial structure. At this time, in the left-right direction, the sleeves 122a and 122b connected to the ground potential are located between the socket 123a to which the high-frequency signal is applied and the socket 123b to which the high-frequency signal is applied. Therefore, in the connector 100 for inspection, the ground pin 220a extends in the up-down direction on the right side of the signal pin 120a and the left side of the signal pin 120b. Thereby, the ground pin 220a connected to the ground potential is located between the signal pin 120a to which the high-frequency signal is applied and the signal pin 120b to which the high-frequency signal is applied. Here, the conductor to which the high frequency signal is applied is called a signal conductor. A conductor connected to the ground potential is called a ground conductor. As a result, the positional relationship between the signal conductor and the ground conductor in the section where the signal pins 120a and 120b are provided is close to the positional relationship between the signal conductor and the ground conductor in the section where the sockets 123a and 123b are provided. The electrical characteristics of the characteristic impedance and the like in the section where the signal pins 120a and 120b are provided are close to the electrical characteristics of the characteristic impedance and the like in the section where the sockets 123a and 123b are provided. As described above, according to the connector 100 for inspection, when a plurality of terminals to be measured include a signal terminal and a ground terminal, it is possible to accurately measure a high-frequency signal.

In addition, the ground pin 220a connected to the ground potential is located between the signal pin 120a to which the high-frequency signal is applied and the signal pin 120b to which the high-frequency signal is applied. Thereby, the isolation between the signal pins 120a and the signal pins 120b is improved.

In addition, according to the connector 100 for inspection, the size of the connector 100 for inspection can be reduced. More specifically, in the inspection connector, in the case where the ground pins are also connected to the sleeve and the socket having a coaxial structure as in the case where a plurality of signal pins are connected to the socket and the Connectors are enlarged. On the other hand, in the connector 100 for inspection, the ground pin 220a connected to the ground potential is located between the signal pin 120a to which the high frequency signal is applied, and the signal pin 120b to which the high frequency signal is applied. Therefore, the ground pin 220a may not be connected to the sleeve 122a and the socket 123a having a coaxial structure. As a result, miniaturization of the connector 100 for inspection is aimed at.

According to the connector 100 for inspection, the ground pins 220a to 220h are used. Therefore, the ground pins 220a to 220h can easily and surely contact each of the plurality of ground terminals. As a result, according to the connector 100 for inspection, when a signal terminal and a ground terminal are included in a plurality of terminals to be measured, it is possible to accurately measure a high-frequency signal.

According to the connector 100 for inspection, when a signal terminal and a ground terminal are included in a plurality of terminals to be measured, a high-frequency signal can be accurately measured. More specifically, in the connector 100 for inspection, in the cross section orthogonal to the front-rear direction, the plunger 102 exists on the left side of the signal pin 120a, and the pin does not exist. Thereby, the plunger 102 connected to the ground potential is located on the left side of the signal pin 120a. The ground pin 220a connected to the ground potential is located on the right side of the signal pin 120a. As a result, the cross-sectional structures of the signal pin 120a, the plunger 102 and the ground pin 220a are close to the cross-sectional structures of the sleeve 122a and the socket 123a. The electrical characteristics such as the characteristic impedance in the section where the signal pins 120a are provided are close to the electrical characteristics such as the characteristic impedance in the section where the socket 123a is provided. As described above, according to the connector 100 for inspection, when a plurality of terminals to be measured include a signal terminal and a ground terminal, it is possible to accurately measure a high-frequency signal.

According to the inspection connector 100, the influence of resonance generated in the ground pins 220a to 220h can be suppressed. Hereinafter, the ground pins 220a and 220b will be described as examples. When the inspection connector 100 does not include the ground pin supporting member 132 , the ground pins 220 a and the ground pins 220 b are electrically connected through the cable adapter 105 . The ground pins 220a are not in contact with the ground pins 220b. It is difficult to keep the whole of the ground pins 220a and 220b at the ground potential. That is, a potential difference is likely to be generated between the upper end of the ground pin 220a and the lower end of the ground pin 220a. A potential difference is easily generated between the upper end of the ground pin 220b and the lower end of the ground pin 220b. At this time, the ground pins 220a and 220b may resonate.

Therefore, the ground pin supporting member 132 supports the ground pins 220a and the ground pins 220b in a state of being electrically connected to the ground pins 220a and 220b. Thereby, a potential difference may be generated between the ground pin supporting member 132 and the lower end of the ground pin 220a. There is a possibility that a potential difference is generated between the ground pin supporting member 132 and the lower end of the ground pin 220b. The length of the section where the potential difference is likely to be generated when the ground pin supporting member 132 is provided is shorter than the length of the section where the potential difference is likely to be generated when the ground pin supporting member 132 is not provided. When the length of the section in which the potential difference is likely to be generated is shortened, the potential difference is reduced. As a result, the generation of useless resonance is suppressed. As described above, according to the inspection connector 100, the influence of the resonance generated in the ground pins 220a to 220h can be suppressed. This effect is especially effective in the transmission of high-frequency signals in the millimeter wave band or the microwave band.

In particular, in the connector 100 for inspection, the ground pin support member 132 is arranged below the center in the vertical direction of the ground pins 220a to 220h. The length of the section in which the potential difference is likely to be generated among the ground pins 220a to 220h becomes shorter. As a result, the generation of useless resonance is suppressed. As described above, according to the inspection connector 100, the influence of the resonance generated in the ground pins 220a to 220h can be suppressed more effectively. This effect is especially effective in the transmission of high-frequency signals in the millimeter wave band or the microwave band.

In the connector 100 for inspection, the characteristic impedance variation in the area in which the signal pins 120a-120h are provided can be suppressed. In more detail, each of the lower ends of the ground pins 220a-220h is thinner than the portion above the lower ends of the ground pins 220a-220h. The ground pin supporting member 132 supports the lower ends of the ground pins 220a to 220h. Thereby, the total thickness of the lower ends of the ground pins 220a to 220h and the ground pin support member 132 is close to the thickness of the portion above the lower ends of the ground pins 220a to 220h. The distance between the ground pin supporting member 132 and the signal pins 120a-120h is close to the distance between the portion above the lower ends of the ground pins 220a-220h and the signal pins 120a-120h. As a result, in the connector 100 for inspection, the characteristic impedance variation in the area in which the signal pins 120a-120h are provided can be suppressed.

Furthermore, the thinned portions of the ground pins 220 a to 220 h are supported by the ground pin support member 132 . Therefore, breakage of the ground pins 220a to 220h is suppressed.

In the inspection connector 100, generation of unnecessary radiation is suppressed. More specifically, the lower end of the plunger 102 is located below the lower ends of the signal pins 120a-120h and the lower ends of the ground pins 220a-220h. Thereby, the plunger 102 surrounds the periphery of the lower ends of the signal pins 120a to 120h and the lower ends of the ground pins 220a to 220h when viewed in the downward direction. As a result, generation of unnecessary radiation from the signal pins 120a to 120h and the ground pins 220a to 220h to the outside of the inspection connector 100 is suppressed. In addition, the signal pins 120a to 120h and the ground pins 220a to 220h are suppressed from being affected by noise from outside the inspection connector 100 .

In the connector 100 for inspection, the bush 124 exists between the ground pin support member 132 and the signal pins 120a-120h. Therefore, the signal pins 120 a to 120 h are fixed to the ground pin support member 132 via the bushing 124 . Thereby, breakage of the signal pins 120a to 120h is suppressed.

(Variation example) Hereinafter, the structure of the inspection connector 100a of the modification of this invention is demonstrated with reference to drawings. FIG. 7 is a cross-sectional view of the inspection connector 100a. In FIG. 7, the structure of the connector 100a for inspection in the cross section orthogonal to the front-back direction is shown. FIG. 8 is an enlarged cross-sectional view of the inspection connector 100a.

As shown in FIGS. 7 and 8 , the inspection connector 100 a is different from the inspection connector 100 in the structure of the bushes 130 a to 130 h (the bushes 130 d to 130 h are not shown). In more detail, in the connector 100 for inspection, the bushes 130a-130h are accommodated in the inside of the sleeves 122a-122h, respectively. On the other hand, in the connector 100a for inspection, a part of the bushes 130a-130h is accommodated in the inside of the sleeves 122a-122h, respectively. The remaining parts of the bushings 130a-130h are disposed outside the sleeves 122a-122h, respectively. More specifically, the upper parts of the bushes 130a to 130h have a cylindrical shape having a central axis extending in the up-down direction. The lower parts of the bushes 130a to 130h have a cylindrical shape having a central axis extending in the up-down direction. The diameter of the outer peripheral surface of the lower part of the bushings 130a-130h is larger than the diameter of the outer peripheral surface of the upper part of the bushings 130a-130h. In addition, the diameter of the outer peripheral surface of the upper portion of the bushes 130a to 130h is substantially equal to the diameter of the inner peripheral surface of the sleeves 122a to 122h. Thereby, the upper parts of the bushes 130a to 130h are inserted into the lower end parts of the sleeves 122a to 122h. The other configurations of the inspection connector 100a are the same as those of the inspection connector 100, so the description is omitted.

According to the inspection connector 100a, for the same reason as the inspection connector 100, it is possible to accurately measure a high-frequency signal even when a plurality of terminals to be measured include a signal terminal and a ground terminal. Moreover, according to the connector 100a for inspection, for the same reason as the connector 100 for inspection, the influence of the resonance which generate|occur|produces in the ground pins 220a-220h can be suppressed.

(Other Embodiments) The inspection connector of the present invention is not limited to the inspection connectors 100 and 100a of the above-described embodiment, and can be changed within the scope of the gist.

In addition, the configuration of the inspection connectors 100 and 100a may be combined arbitrarily.

In addition, in the connectors 100 and 100a for inspection, metal plating may be performed on the surfaces of the bushes 124 and 126 except for the portions where the signal pins 120a to 120h contact the bushes 124 and 126 . That is, in the bushings 124 and 126, metal plating is performed on the inner peripheral surfaces of the through holes into which the signal pins 120a to 120h are not inserted. Thereby, the ground pins 220a to 220h are electrically connected through metal plating. As a result, in the connectors 100 and 100a for inspection, the influence of the resonance which generate|occur|produces in the ground pins 220a-220h can be suppressed. Metal plating is, for example, gold plating.

In addition, in the connectors 100 and 100a for inspection, the number of the signal pins 120a-120h is not limited to eight. The connectors 100 and 100a for inspection only need to have at least the signal pins 120a and 120b. In addition, in the connectors 100 and 100a for inspection, the number of the ground pins 220a to 220h is not limited to eight. The connectors 100 and 100a for inspection only need to have at least the ground pins 220a.

In addition, in the connectors 100 and 100a for inspection, a pin may exist on the left side of the signal pin 120a.

In addition, in the connectors 100 and 100a for inspection, the upper ends of the ground pins 220a to 220h may not be in contact with the cable adapter 105 . The ground pins 220 a to 220 h only need to be electrically connected to the cable adapter 105 . Therefore, the ground pins 220a-220h can also be electrically connected to the cable adapter 105 through other conductive members.

In addition, in the connectors 100 and 100a for inspection, the ground pin support member 132 is not an essential structure. In addition, the ground pin support member 132 may be arranged above the center in the vertical direction of the ground pins 220a to 220h.

10: Unit for inspection 100: Connector for inspection 100a: Connector for inspection 102: Plunger 103: Ring 104: Shell 105:Cable Adapter 106: Flange 108: Spring 109: Spacer 120a~120h: Signal pin 122a~122h: Sleeve 123a~123h: jack 124: Bushing 126: Bushing 130a~130h: Bushing 132: Ground pin support member 200a~200h: Connector for external connection 202a~202h: Coaxial cable 204a~204h: Center conductor 206a~206h: Outer conductor 208a~208c: Insulators 210a~210c: film 220a~220h: Ground pin 1202a: Barrel 1204a: Lower needle 1206a: Needle up 1208a: Spring H1~H4: Through hole

FIG. 1 is a cross-sectional view of the inspection unit 10 . FIG. 2 is a cross-sectional view of the inspection connector 100 . FIG. 3 is an exploded perspective view of the connector 100 for inspection. FIG. 4 is an enlarged cross-sectional view of the connector 100 for inspection. FIG. 5(A) is an external perspective view of the bushings 124 and 126 and the grounding pin supporting member 132 . FIG. 5(B) is a view when the ground pin supporting member 132 is viewed upward. FIG. 6 is a bottom view of the cable adapter 105 . FIG. 7 is a cross-sectional view of the inspection connector 100a. FIG. 8 is an enlarged cross-sectional view of the inspection connector 100a.

102: Plunger

105:Cable Adapter

120a~120d: Signal pin

122a~122d: Sleeve

123a~123d: Socket

126: Bushing

130a~130d: Bushing

204a~204d: Center conductor

206a~206d: Outer conductor

208a~208c: Insulators

210a~210c: film

220a~220d: Ground pins

Claims (14)

An inspection connector connected to an end of a first coaxial cable and an end of a second coaxial cable, wherein the first coaxial cable includes a first center conductor and a first center conductor surrounding the first center conductor. An outer conductor, and a first insulator insulating the first center conductor and the first outer conductor; the second coaxial cable includes a second center conductor, a second outer conductor surrounding the second center conductor, and the second outer conductor a second insulator insulating the second central conductor from the second outer conductor; and the inspection connector includes: a first sleeve electrically connected to the first outer conductor; and a second sleeve electrically connected to The second outer conductor is disposed on the right side of the first sleeve; a cable adapter supports the first sleeve and the second sleeve in a state of being electrically connected to the first sleeve and the second sleeve 2 sleeves; a first signal pin electrically connected to the first center conductor; a second signal pin electrically connected to the second center conductor; and a first ground pin electrically connected to the cable switch The connector extends in the vertical direction on the right side of the first signal pin and the left side of the second signal pin; wherein the inspection connector is connected to the end of the third coaxial cable, and the third coaxial cable has a third center A conductor, a third outer conductor surrounding the third center conductor, and a third insulator insulating the third center conductor from the third outer conductor; the inspection connector further includes: a third sleeve; a third signal pins; and the second ground pin; the third sleeve is electrically connected to the third outer conductor; the third sleeve is arranged on the right side of the second sleeve; the cable adapter is electrically connected to the third sleeve The state of the barrel supports the third sleeve; the second ground pin is electrically connected to the cable adapter; the second ground pin is on the right side of the second signal pin and the left side of the third signal pin, along the upper and lower sides direction extension. The inspection connector according to claim 1, wherein the inspection connector further includes a plunger that surrounds the first signal pin, the second signal pin, and the first ground pin when viewed in a downward direction, and is electrically Connect to the above cable adapter. The inspection connector according to claim 2, wherein the plunger is present and the needle is not present on the left side of the first signal pin in the cross section orthogonal to the front-rear direction. The inspection connector according to claim 2, wherein the inspection connector further includes an insulating support member that is supported by the plunger and supports the first signal pin, the second signal pin, and the first ground pin . The inspection connector according to any one of claims 2 to 4, wherein the lower end of the plunger is located below the lower end of the first signal pin, the lower end of the second signal pin, and the lower end of the first ground pin. The inspection connector according to claim 4, wherein metal plating is applied to the surface of the insulating support member except for the portion where the first signal pin and the second signal pin are in contact with the insulating support member. The inspection connector according to any one of claims 2 to 4, wherein the inspection connector further includes: a housing which is a cylindrical member extending in the up-down direction and which receives the plug so as to be positioned on the plunger. the plunger support; and a flange provided with a through hole for the casing to pass through in the vertical direction; and the first coaxial cable and the second coaxial cable passing through the interior of the casing in the vertical direction. The inspection connector according to any one of claims 1 to 4, wherein the upper end of the first ground pin is in contact with the cable adapter. The inspection connector according to any one of claims 1 to 4, wherein the inspection connector further comprises: a third socket; and a ground pin support member; and The third socket is electrically connected to the third center conductor; the third sleeve is: when viewed from a downward direction, surrounding the third socket; the third signal pin is electrically connected to the third socket, and is The third socket extends downward, and the ground pin supporting member supports the first ground pin and the second ground pin in a state of being electrically connected to the first ground pin and the second ground pin. The inspection connector according to claim 9, wherein the ground pin support member is disposed below the center in the vertical direction of the first ground pin and the second ground pin. The inspection connector according to claim 9, wherein the inspection connector further includes a plunger that surrounds the first signal pin, the second signal pin, and the first ground pin when viewed in a downward direction, and is electrically connected to the above-mentioned cable adapter; and an insulating support member which is supported by the above-mentioned plunger and supports the above-mentioned first signal pin, the above-mentioned second signal pin, the above-mentioned third signal pin, the above-mentioned first ground pin and the above-mentioned second signal pin a ground pin; and the first signal pin, the second signal pin, and the third signal pin are fixed to the ground pin support member via the insulating support member. The inspection connector according to any one of claims 1 to 4, wherein the inspection connector further includes: a ground pin support member; and The lower end of the first grounding pin is thinner than the portion above the lower end of the first grounding pin; the grounding pin supporting member supports the lower end of the first grounding pin. The inspection connector according to claim 1, comprising: a first socket electrically connected to the first center conductor; and a second socket electrically connected to the second center conductor. An inspection unit comprising: the inspection connector according to claim 7; and the first coaxial cable and the second coaxial cable.

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